Bromination and Dehydrobromination Studies on Some CIS-4a-Methyl-Decaline-2,7-Diones

Abstract

Results of the bromination and dehydrobromination of several angular methylated decalindiones are described. The key reaction, base-induced cyclization of the monobromo keto ester (3), and the dibromo ketone (4), leads to the formation of tricyclic systems (6) and (9) respectively.

Keywords

• cis-fused decalin
• favorskii
• intermediate
• dehydrohalogenation
• intramolecular cyclization
• x-ray analysis